Integrating Cloudflare Turnstile for the Ghost sign-in page for staff/contributors not members of the newsletter

Developer help Self-hosting
1

As above, I’m self-hosting Ghost, but I can’t for the life of me find where I can customise, edit the html of the sign-in page so that I can integrate it with Cloudflare Turnstile.

2

Any ideas? I can’t edit the ember.js stuff